In the sequel [1]}, we show any polarized Weinstein manifold,
i.e. a Weinstein manifold with a global field of Lagrangian planes in its tangent bundle,
can be deformed to have an arboreal skeleton. More specifically, the arboreal singularities that arise are positive in the sense that they are indexed by signed rooted trees with all positive signs \(+1\) , and conversely, any Weinstein manifold with a positive arboreal skeleton comes with a canonical (homotopy class of) polarization.
